Re: Angle grinder RSG

[FutureT-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

In a message dated 7/1/00 6:44:43 PM Pacific Daylight Time, 
twftesla-at-uswest-dot-net writes:

> >Hi all,
>  >great job ! list is up again we are all on the run again :)
>  > 
>  >I am planning to do a RSG using a cheap Angle Grinder  I had for 15$...
>  >11000 Rpm, 600 Watts of power, 230 VAC powered.
>  >I want to reduce and regulate  rpm by the use of triacs... the motor is a 
>  >brush type,
>  >and I have seen lots of kits for this purpose...
>  >I will spin a plexiglas disc  250mm diameter, 10 mm thick, 4 rotating 
>  >electrodes, 2 stationary.
>  > 
>  >Do you have any suggestions ?
>  > 
>  >tnx all again
>  > 
>  >ciao
>  >Daniele
>  > 

Daniele,

I assume you want to build a variable speed rotary (non-sync) gap?

This should work out well with that grinder, if you limit the speed as
you said.  I would not recommend using plexiglas though because
it is so weak and brittle.  Lexan is a much better material.

Cheers,
John Freau